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View Full Version : Infinity Quantum 2 Tweeters Not Flush


Kencat
12-10-2005, 06:46 AM
On my new Q2's, the upper and lower tweeters are angled upwards. The bottom of the tweeters are held out on tubular standoffs. Have a look at the pics.

I "think" I can see this in pictures on other sites on the web, but it's not real clear. I'm wondering if this is a modification that was popular at one time and the previous owner did this.

It looks well done, but it also looks a bit unfinished with the big rat hole showing into the cabinet. What would the impact on the sound quality be if this is not "factory" designed ??

It's interesting to note as well, that the angle is not the same for the top and bottom. If this is factory, or a good mod, it looks like the amount of angle of the tweets must be engineered for some good reason.

This would be good info for other Q2 refurbishers, in case someone had removed the spacers at one time, and didn't put them back.

Anyone with any info on the matter?

botrytis
12-10-2005, 07:18 AM
That is the way they come from the factory. I think it is because planar drivers have a very narrow dispersion range. So they elevate one to increase that.

Dave

Kencat
12-10-2005, 08:43 AM
Thanks Dave,

I was 90% convinced this was the case. The job is very professional. To take these out will require some attention and labelling of the parts to get it all put back together again correctly.

lab
12-11-2005, 03:20 AM
I think even the Quantum 3 had the upper tweeter aimed upward slightly- but it's been about 20 years since I saw them. I miss those rascals! (sniff!) I went and traded them in on some other speakers when I was young and foolish. I'm no longer young.

I can clearly remember seeing the midrange dome move to the beat of the music. At the time it worried me that I might be over-driving them. Maybe that's what motivated the trade. Quite a pity as I know the Infinity Quantum's were the first speaker I owned that just felt "right".

That was a great deal, Kencat. Cherish those Q-2's. Extremely rare.

Charivari
12-11-2005, 12:25 PM
Just to verify, yep, that is the way those tweeters are supposed to be. It improves the vertical dispersion so these 4' tall speakers will sound great even if you're standing up.

- JP

walllly
12-15-2005, 11:32 AM
I would appreciate it if you could tell me the lenght of those spacers. I recently acquired a pair of Q2's and the spacers had been removed. Thanks.

Walllly
wgray@centennialpr.net